Pulling-over machine



Nov. 11 1924.

J. GOULDBOURN ET AL PULLING-OVER MACHINE Filed Dec. 29, 1921 Patented Nov. 11, 19245.

OFFICE.

JOSEPH GOULDBO'URN AND WILFRID THOMAS MINETT, OF LEICESTER, ENGLAND, ASSIGNORS TO UNITED SHOE MACHINERY CORPORATION, OF PA'IERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PULLING-OVER MACHINE.

Application filed December 29, 1921.

To'aZZ whom it may concern:

Be it known that we, J osnrrr GOULDBOURN andWVILFRID T. MINETT, residing at Leicester, Leicestershire, England, have invented certain Improvements in Pulling-Over Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to pulling over machines for use in the manufacture of boots and shoes, and more particularly to the control in such machines of the upper fastening mechanism.

Pulling-over machines as commonly constructed include in their organization fastening mechanism which is movable bodily toward and from the shoe and is also angularly displaceable, for example under the control or influence of the shoe, to locate the points of insertion of the fastenings in the proper relation to the edge of the shoe bottom. Such an organization is shown, for example, in United States Lettcrs Patent No. 1,029,387, granted on June 11, 1912 upon an application of R. F. Me lieely. An object of this invention is to provide for better control than heretofore of such fastening mechanism, and to this end a feature of the invention consists in novel means for effecting orinsuring the return of the fastening mechanism to a normal position after the upper fastening operation. In the embodiment of the invention herein illustrated the desired results are secured by a device which is arranged to act positively in the movement of the fastening mechanism away from the shoe to return said mechanism to a predetermined position relatively to the support which carries the mechanism toward and from the shoe. The construction shown includes in its organization yielding positioning means, as common yprovided heretofore, for preventing uncontrolled movement of the fastening mechanism as it is carried toward and from the shoe and against the resistance of which the mechanism is angularly displaceable, in combination with means for returning the mechanism to its normal position on the support, if it is not thus returned by the yielding positioning means. In such an organization the return of the Serial No. 525,619.

fastening mechanism to its normal position is insured irrespective of the mass of such mechanism or the frictional resistance to its angular displacement, without the necessity for adding unduly to the strength of the by the movement of the fastening mechanism away from the shoe, as shown and described in U. S. Letters Patent No. 1,510,851 granted on Oct, 7, 1924 upon an application of Arthur E. Jerram and Joseph Gouldbourn. t will be recognized, however, that in many of its aspects the invention is not limited to a machine in which the shoe is thus positioned nor to fastening mechanism of the particular construction illustrated.

The above and other features of the invention, together with certain details of construction and combinations of parts, will now be more particularly described wit-h reference to the accompanying drawings and pointed out in the claims.

In the drawings:

Figur 1 is a plan view of one of the fastening mechanism and associated parts provided for the opposite sides of the forepart of the shoe, with the mechanism in tack receiving position. v

Fig. 2 is a side elevation of the mechanism shown in Fig. 1, illustrating more fully its relation to the shoe, and

Fig. 3 is a sectional plan view showing more fully the device for effecting a positive return of the fastening mechanism to its normal position.

The machine herein shown, as more fully described in the prior Jerram andGould bourn patent, comprises shoe positlonmg means which includes a sole rest 2 on which the shoe is positioned bottom downward,

forepart, opposite side clamps 6 for holding the upper and for supporting the shoe in the upper fastening operation, and tacker arms 8 mounted for movement toward and from the shoe at the end and the opposite sides of the forepart and carrying means for overwiping the upper and for driving a plurality of tacks to fasten the upper in pulled-over position. The drawings illustrate the invention in its application to one of the opposite side fastening mechanisms and are accordingly confined to the showing of that mechanism with its associated side clamp and grippers. It will be understood, however, that the construe-- tion illustrated will be duplicated at the opposite side of the shoe, and that the invention may also be applied to the fastening mechanism which operates at the toe end of the shoe. In the operation of the type of machine illustrated, after the upper has been pulled by relative movement of the grippers and the sole rest and after the side clamps have been moved to their operative position, the tacker arms are swung inwardly to overwipe the margin of the upper, to effect release of the upper from the grippers and to locate the tacks in the proper relation to the edge of the shoe bottom, whereupon the tacks are driven and the parts are returned to their starting positions.

Each of the tacker arms 8 supports a tack carrier 10 which is pivoted at 12 to swing laterally of the arm into position (Fig. 1) to receive the tacks from the usual tack delivering means, and then to carry the tacks into alinement with the tack drivers, the swinging movements being imparted to the tack carrier while the tacker arm is in its outer position a *ay from the shoe by the action of a gear segment 14 which is pivoted on a stationary bracket 16 and is operatively engaged with a gear segment 18 on the outer end of the tack carrier. A latch 20 is provided for holding the tack carrier in tack presenting position as the tacker arm moves toward and from the. shoe. As the tacker arm moves outwardly from the shoe the gear segment 18 is carried into operative engagement with the segment 14 and the outer end of the latch 20 is carried into engagement with a latch releasing screw 22 which is mounted on the bracket 16 and effects a releasing movement of the latch to permit the tack carrier to be swung outwardly to receive the tacks and to be returned to its normal position. The present machine is designed for driving three tacks at each side of the shoe in predetermined relation to a double or twin side gripper of well-known construct-ion, and the tack carrier 10 is accordingly provided with three tack pockets 24, arranged as shown in Fig. 1.

The tack carrier 10 in the present machine is pivoted upon a supporting block 26 which, together with the tack drivers 28, is swiveled on the tacker arm 8 substantially in the manner illustrated in said prior McFeely patent, the tacker mechanism, including the carrier 10 and the drivers, thus being permitted to turn on the arm into different angular relations to the direction of its movement toward the shoe in order to locate the points of insertion of the difi'erent tacks at the proper distances from the edge of the shoe bottom. Such angular displacement of the tacker mechanism is effected under the control or influence of the shoe by the action of one of the side clamp members 30 which is swiveled, as shown, to permit it to adjust itself to the side of the shoe and has a shoulder 32 arranged to be engaged by a plate 84 adjustably secured to the block 26.

The mechanism which swivels on the arm 8 is normally maintained in a predetermined position on the arm by means of a wedge shaped spring plunger 36 which engages in a similarly shaped recess in a depending portion of the block 26, substantially as shown in said McFeely patent. It will thus be understood that as the tacker arm moves toward the shoe the shoulder 32 on the clamp member 30 by its engagement with the plate 34 causes the block 26 and the parts carried thereby to turn on the arm against the resistance of the spring plunger 36 until the parts are located in that relation to the shoe determined by the position previously assumed by the member 30 upon its engagement with the shoe.

Supported also on the block 26 to turn therewith are a pair of wiper plates 38 which are mounted to yield backwardly from the shoe and also to tip downwardly in their overwiping movement in response to resistance of the shoe materials. The movements of the wiper plates are controlled by means of rolls 40 which engage in recesses in the outer ends of the plates, these rolls being mounted on a cross bar 42 which is swiveled on the upper end of a rod 44. For pressing the rolls downwardly a spring 46 is mounted on the rod 44 between a nut 48 on the lower end of the rod and a cam shaped collar 50 which is free to turn and to slide on the rod, this collar having a handle portion 52 for use in turning it. Cooperating with the collar 50 is a second cam shaped collar 54 which is fast on the block 26 and hasa cylindrical portion 56. By this arrangement the compression of the spring 46 may be adjusted in order to vary the resistance to the yield of the wipers in substantially the same manner as in prior machines of the same general type. Mounted also on the block 26 are members con structed to provide tack pockets 58 relatively to which the tack carrier is movable to transfer the tacks and through which the and is notched or recessed on the side toward the tacker arm 8 to provide walls 62 which are inclined to the direction of movement of the tacker arm and are arranged to engage the cylindrical portion 56 of the collar 54, the plate having also a central curved recess 64. which conforms substantially to the contour of the cylindrical part 56. As the tacker arm retires from the shoe, the periphery of the cylindrical part 56, in case the block 26 has been turned from its central position on the tacker arm and has not been returned by the spring plunger 36, engages one or the other of the walls 62, and the tacker mechanism is thus swung gradually back to its central position until the part 56 enters the central recess 64 in the plate. It will be understood that before the teeth of the gear segment 18 on the tack carrier arrive in position to intermesh with the teeth of the segment 14 the return of the block 26 and the parts supported thereon to central position on the tacker arm is thus effected, andthe swiveling parts are locked in central position until the tacker arm' is again moved inwardly in the operation of the machine upon the next shoe. This arrangement insures that notwithstanding unwonted friction of the swiveling parts or the failure for any other reason of the spring plunger 36 to restore the parts to central position, the gear segments nevertheless will properly reengage, and it also permits the use of a centralizing spring which is only sufficiently strong to prevent undesirale uncontrolled movement of the parts as they approach and leave the shoe, thus affording a high degree of sensitiveness of the swiveling p arts in their movement of accommodation to the shoe.

It will be evident that, among its important advantages, the invention solves a difficulty which may arise from an increase in the range of the upper pulling and fastening action at the sides of the shoe with consequent increase in the mass of the parts which havea movement of accommodation under the control of the shoe, a difficulty which is increased in an organization where the fastenings are driven upward and where a movable carrier is provided to transfer fastenings delivered from above and present them in alinement with the drivers. In this and other aspects, however, the invention is obviously not limited in utility to an organization of the particular type illustrated, nor to mechanism for driving fastenings in the form of tacks, but is applicable'to various types of pulling-over machines.

- Having described the invention, what we claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism movable bodily toward and from the shoe and movable also under control of the shoe to change its angular relation to the direction of its movement toward the shoe, yielding" positioning means for said fastening mechanism against the resistance of which the mechanism is thus movable angularly, and additional means arranged to become operative as the fastening mechanism withdraws fro-m the shoe to assist in returning said mechanism into a predetermined angular relation to said direction of movement.

2. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism movable bodily toward and from the shoe and movable also under control of the shoe to change its angular relation to the direction of its movement toward the shoe, yielding positioning means for said fastening mechanism against the resistance of which said mechanism is thus movable angularly, and positive means for returning the fastening mechanism into a predetermined angular relation to said direction of movement.

3. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism movable bodily toward and from the shoe, said fastening mechanism being constructed to drive a plurality of fastenings in different locations along the edge of the shoe bottom, means automatically operative in the movement of the fastening mechanism toward the shoe to effect an angular displacement of said mechanism for locating the fastenings at predetermined distances from the edge of the shoe bottom, yielding means against the resistance of which said fastening mechanism is thus displac-eable angularly, and additional means automatically operative upon movement of the fastening mechanism away from the shoe to restore said mech anism to the position from which it is thus displaced.

4. In a machine of the class described, the

combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism movable bodily toward and from the shoe and movable also under control of the shoe to change its angular relation to the direction termined angular relation to said direction of movement.

5. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said mechanism being mounted on its support for turning movement under control of the shoe to locate the fastenings relatively to the edge of the shoe bottom, a device for holding the fastening mechanism yieldingly in a predetermined normal position on its support and against the resistance of which said mechanism is permitted to turn under control of the shoe, and additional means automatically operative in the m vement of the fastening mechanism away from the shoe to insure the return of said mechanism to its normal position on the support.

6. In a. machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said mechanism being mounted on its support for turning movement to locate the fastenings relatively to the edge of the shoe bottom, a device for holding the fastening mechanism yieldingly in a predetermined normal position on its support and against the resistance of which said mechanism is permitted to turn as it moves toward. the shoe, and positive means for insuring re turn of the fastening mechanism to its nor mal position on the support.

7. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said mechanism being mounted on its support for turning movement to locate the fastenings relatively to the edge of the shoe bottom, a. device for holding the fastening mechanism yieldingly in a predetermined normal position on its support and against the resistance of which said mechanism is permitted to turn as it moves toward the shoe, and a device toward which said fastening mechanism is movable as it withdraws from the shoe for returning said mechanism to its normal position on the support.

8. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said mechanism being mounted to turn on its support as it moves toward the shoe to locate the fastenings relatively to the edge of the shoe bottom, and a device toward wnich said fastening mechanism is movable as it withdraws from the shoe for returning said mechanism to a predetermined position on its support.

9. In a machine of the class described the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of a tacker arm mounted for movement toward and from the shoe, tacker mechanism comprising tack holcing and driving devices mounted to swivel on said arm under control of the shoe, and means for positively restoring said tacker mechanism to a normal position on the arm upon movement of the arm from the shoe.

10. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of a tacker arm mounted for movement toward and from the shoe, tacker mechanism mounted to swivel on said arm under control of the shoe, and a device mounted independently of said tacker arm and automatically operative upon movement of the arm from the shoe to restore said tacker mechanism to a normal position on the arm.

11. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism movable bodily toward and from the shoe and displaceable also under control of the shoe to change its angular relation to the direction of its movement towarc the shoe, and a device having a surface inclined to said direction of movement for engagin the fastening mechanism as it withdraws from the shoe and returning it to the position from which it is thus displaced.

12. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said fastening mechanism being mounted to turn on its support for accommodation to the shoe, and a device having a recess arranged to receive a portion of said I fastening mechanism as it moves away from the shoe and to restore said mechanism to a normal position on the support.

13. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism. toward and from the shoe, said fastening mechanism being displaceable on its support to locate the fastenings relatively to the edge of the shoe bottom, and a device having oppositely inclined walls arranged to receive a portion of said fastening mechanism between them and to return the mechanism to a predetermined position on its support as the support moves away from the shoe.

14:. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said fastening mechanism being mounted to turn on its support under control of the shoe to locate the fastenings relatively to the edge of the shoe bottom, and a device automatically operative to lock said fastening mechanism in predetermined position on its support when said fastening mechanism is at its outer limit of movement from the shoe and to release said fastening mechanism to permit it to turn on its support as the mechanism is carried toward the shoe.

15. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said fastening mechanism being mounted on its support for turning movement under control of the shoe as it approaches the shoe, yielding means on said support arranged to maintain the fastening mechanism in a normal position thereon and against the resistance of which said mechanism is permitted to turn as it approaches the shoe, and a device automatically operative upon movement of the fastening mechanism away from the shoe to restore said mechanism to its normal position on the support and to lock it in said position until it moves inwardly for the fastening operation upon the next shoe.

16. In a machine of the class described,

the combination with shoe positioning means and means for pulling the upper of'the shoe over its last, of upper fastening mechanism movable to ward and from the shoe and movable also under control of the shoe .to change its angular relation to the direction of its movement toward the shoe, said fastening mechanism including a carrier additionally movable to effect a transfer of the fastenings, operating mechanism for said carrier comprising parts arranged to be operatively engaged with each other by the movement of the fastening mechanism away from the shoe, and a device arranged to act positively on the fastening mechanism in its movement from the shoe to insure its return to a normal angular relation to said direction of movement before said parts are thus engaged.

17. In a machine of the class described, the combination with shoe positioning means and means for pulling the upper of the shoe over its last, of upper fastening mechanism and a support therefor movable to carry said mechanism toward and from the shoe, said. fastening mechanism being angularly displaceable on its support to locate the fastenings relatively to the edgeof the shoe bottom and including a carrier additionally movable to effect a transfer of the fastenings, operating mechanism for said carrier comprising a pair of gear members one of which is carried into engagement with the other by the movement of the fastening mechanism away from the shoe, and a device toward which said fastening mechanism is movable as it withdraws from the shoe for insuring the return of said mechanism to a normal position on its support prior to the interengagement of said gear members. 7

In testimony whereof we have signed our names to this specification.

JOSEPH GOULDBOURN. lVILFR-ID THOMAS MINETT. 

